In case of "shorts" fin, it's a Betta plakat, maybe a 'polka dot' pattern.
In doubt, you could deworm him with eSHa-ndx (efficient againts flat and round worms).
If you waterchange, make sure it is at the same temperature as tank's.
In doubt, you could deworm him with eSHa-ndx (efficient againts flat and round worms).
If you waterchange, make sure it is at the same temperature as tank's.